QT下的简易音视频播放器源码

#include "myplayerwidget.h" #include "ui_myplayerwidget.h" MyplayerWidget::MyplayerWidget(QWidget *parent) : QWidget(parent) , ui(new Ui::MyplayerWidget) { ui->setupUi(this); this->setWindowTitle("Vnish视频播放器"); InitElement(); } MyplayerWidget::~MyplayerWidget() { delete ui; } void MyplayerWidget::InitElement() { m_MediaPlayer = new QMediaPlayer(); m_MediaPlaylist = new QMediaPlaylist(); m_VideoWidget = new QVideoWidget(); ui->horizontalLayout_4->addWidget(m_VideoWidget); QStringList strSpeedlist; strSpeedlist <<"0.5X"<<"0.8X"<<"1.0X"<<"1.25X"<<"1.5X"<<"2.0X"<<"4.0X"; ui->speed_cbBx->addItems(strSpeedlist); ui->speed_cbBx->setCurrentText("1.0X"); //安装过滤器 m_VideoWidget->installEventFilter(this); ui->volume_horizontalSlider->setRange(-1,101); ui->volume_horizontalSlider->setValue(50); ui->volumn_label->setText(QString("音量：%1").arg(ui->volume_horizontalSlider->value())); m_MediaPlayer->setPlaylist(m_MediaPlaylist); m_MediaPlayer->setVideoOutput(m_VideoWidget); m_MediaPlayer->setVolume(ui->volume_horizontalSlider->value()); connect(ui->listWidget,&QListWidget::itemDoubleClicked,this,&MyplayerWidget::slot_listWidget_itemDoubleClicked); connect(ui->play_pBtn,&QPushButton::clicked,this,&MyplayerWidget::slot_play_pBtn_clicked); connect(ui->stop_pBtn,&QPushButton::clicked,this,&MyplayerWidget::slot_stop_pBtn_clicked); connect(ui->volume_pBtn,&QPushButton::clicked,this,&MyplayerWidget::slot_volume_pBtn_clicked); connect(ui->full_pBtn,&QPushButton::clicked,this,&MyplayerWidget::slot_full_pBtn_clicked); connect(ui->open_pBtn,&QPushButton::clicked,this,&MyplayerWidget::slot_open_pBtn_clicked); connect(ui->speed_cbBx,&QComboBox::currentTextChanged,this,&MyplayerWidget::slot_speed_cbBx_currentTextChanged); connect(ui->volume_horizontalSlider,&QSlider::sliderMoved,this,&MyplayerWidget::slot_volume_horizontalSlider_sliderMoved); connect(ui->progress_horizontalSlider,&QSlider::sliderMoved,this,&MyplayerWidget::slot_progress_horizontalSlider_sliderMoved); connect(m_MediaPlayer,&QMediaPlayer::durationChanged,this,&MyplayerWidget::slot_MediaPlayer_durationChanged); connect(m_MediaPlayer,&QMediaPlayer::positionChanged,this,&MyplayerWidget::slot_slot_MediaPlayer_positionChanged); } void MyplayerWidget::paintEvent(QPaintEvent *event) { QPainter painter(this); painter.setPen(QColor("rgb(171,171,171)")); painter.drawRect(0,0,width()-1,height()-1); } bool MyplayerWidget::eventFilter(QObject *watched, QEvent *event) { //鼠标双击退出全屏 if(event->type() == QEvent::MouseButtonDblClick) { QMouseEvent *mouseEvent = dynamic_cast<QMouseEvent *>(event); //恢复成子窗口 m_VideoWidget->setWindowFlag(Qt::SubWindow); //退出全屏 m_VideoWidget->showNormal(); m_VideoWidget->setParent(this); ui->horizontalLayout_4->addWidget(m_VideoWidget); } return QWidget::eventFilter(watched,event); } void MyplayerWidget::slot_play_pBtn_clicked() { if(!ui->play_pBtn->text().compare("播放")) { m_MediaPlayer->play(); ui->play_pBtn->setText("暂停"); }else { m_MediaPlayer->pause(); ui->play_pBtn->setText("播放"); } } void MyplayerWidget::slot_stop_pBtn_clicked() { m_MediaPlayer->stop(); ui->play_pBtn->setText("播放"); } void MyplayerWidget::slot_volume_pBtn_clicked() { if(!ui->volume_pBtn->text().compare("音量")) { ui->volume_pBtn->setText("静音"); ui->volume_horizontalSlider->setValue(0); m_MediaPlayer->setVolume(0); }else { ui->volume_pBtn->setText("音量"); m_MediaPlayer->setVolume(100); ui->volume_horizontalSlider->setValue(100); } } //全屏 void MyplayerWidget::slot_full_pBtn_clicked() { m_VideoWidget->setFullScreen(true); } void MyplayerWidget::slot_listWidget_itemDoubleClicked(QListWidgetItem *item) { m_MediaPlaylist->clear(); m_MediaPlayer->stop(); QString strItemText = item->text(); m_MfileNameAndFilePath.value(strItemText); QUrl url(m_MfileNameAndFilePath.value(strItemText)); m_MediaPlaylist->addMedia(url); m_MediaPlayer->play(); ui->play_pBtn->setText("暂停"); } void MyplayerWidget::slot_open_pBtn_clicked() { QStringList fileNames = QFileDialog::getOpenFileNames(this,"获取音视频文件", "./", "*.mp3 *.mp4 *.avi"); // m_MfileNameAndFilePath.clear(); for(int i = 0;i < fileNames.count();i++) { QStringList strSplitList = fileNames.at(i).split("/"); QString str; for(int j = 0;j < strSplitList.count();j++) { str = strSplitList.at(strSplitList.count()-1); } m_MfileNameAndFilePath.insert(str,fileNames.at(i)); QListWidgetItem *item = new QListWidgetItem(str); item->setSizeHint(ITEM_SIZE); ui->listWidget->insertItem(i,item); } } void MyplayerWidget::slot_volume_horizontalSlider_sliderMoved() { if(ui->volume_horizontalSlider->value() == 0) { m_MediaPlayer->setVolume(ui->volume_horizontalSlider->value()); ui->volume_pBtn->setText("静音"); }else { m_MediaPlayer->setVolume(ui->volume_horizontalSlider->value()); ui->volume_pBtn->setText("音量"); } ui->volumn_label->setText(QString("音量：%1").arg(ui->volume_horizontalSlider->value())); } void MyplayerWidget::slot_progress_horizontalSlider_sliderMoved(int position) { m_MediaPlayer->setPosition(position); } void MyplayerWidget::slot_speed_cbBx_currentTextChanged(QString strText) { QString strSpeedText = strText.replace(QRegExp("X$"), ""); //设置速度 正常速度是1.0 m_MediaPlayer->setPlaybackRate(qreal(strSpeedText.toFloat())); } void MyplayerWidget::slot_MediaPlayer_durationChanged(quint64 duration) { ui->progress_horizontalSlider->setRange(0,duration); //设置进度条起始值 qDebug()<<"der"<<duration; m_strVideoDuration = QString("%1:%2:%3").arg(duration/1000/60/60,2,10,QChar('0')) .arg(duration/1000/60%60,2,10,QChar('0')) .arg(duration/1000%60,2,10,QChar('0')); ui->time_label->setText(QString("00:00:00/%1").arg(m_strVideoDuration)); } void MyplayerWidget::slot_slot_MediaPlayer_positionChanged(quint64 position) { ui->progress_horizontalSlider->setValue(position); ui->time_label->setText(QString("%1:%2:%3/%4").arg(position/1000/60/60,2,10,QChar('0')) .arg(position/1000/60%60,2,10,QChar('0')) .arg(position/1000%60,2,10,QChar('0')) .arg(m_strVideoDuration)); }